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REMOVAL AND DISPOSAL OF USED UNDERGROUND PETROLEUM STORAGE TANKS 3 OSHA2 Regulations for Identifying Hazardous Waste (40 Occupational Safety and Health Standards (29 CFR CFR 261) 1910.1000) Regulations for Hazardous Waste Generators (40 EPA3CFR 262) Genera! Regulations for Hazardous Waste Manage- Underground Storage Tanks Regulations (40 CFR ment (40 CFR 260) 280.11, 280.22) SECTION 2—TEMPORARILY OUT OF SERVICE 2.1 Applicability 1. Drain all product lines into the tank, then remove all liquids from the tank. Underground petroleum storage tank systems are 2, Remove all flammable or combustible liquids considered temporarily out of service if they are: (a) idle with the exception of a sufficient quantity (approxi- but will be returned to service within one year, (b) are mately four inches)to assure a saturated vapor space. awaiting abandonment in place, or (c) are awaiting 3. When high water table or flooding conditions removal. exist, remove all stored liquid and ballast the tank by filling with water. 2.2 Securing Tank Systems c. Cap the fill pipe, gauge pipe, tank truck vapor Tanks temporarily out of service must be properly recovery fitting, and vapor return. Secure the tank secured for the period they will be out of service. Tanks against tampering. may be considered properly secured if processed as el Cap the product lines at the service station island, or follows: elsewhere if the pumps are removed, or leave the pumps connected and locked. Disconnect electric power to the a. Observe all special precautions described in 1.3 pumps. through 1.3.2.2. e. Leave the vent line open. b. Remove stored product from the tank using one of f. Consult the appropriate local, state, or federal agen- the following methods: cies concerning regulatory notifit ation requirements. SECTION 3—DISPOSAL IN PLACE 3.1 Criteria for Disposal in Place ment, and (d) cost. Additional considerations include the length of service the equipment has provided and its 3.1.1 This section describes a safe method for the in reuse or salvage value. place disposal of underground tanks. Removal of the tank is preferred(see Section 4). Disposal of the tank in 3.1.2 The federal Resource Conservation and place should be considered in the following cir- Recovery Act (RCRA) (40 CFR 260-265) places restric- cumstances: (a) because of the tank location adjacent tions on disposal of certain residues that may be present equipment or structures may be damaged or weakened in some underground storage tanks. Residues from if the tank is removed, (b) removal may be physically tanks that have held leaded gasoline should be treated impossible, or (c) removal may incur excessive costs. A with extreme caution. Lead compounds and other resi- determination of whether to dispose of a tank in place dues in the tank may be classified as hazardous wastes. or to remove it will depend upon: (a) local regulations All liquids and residues removed from the tank should which may prohibit abandonment in place, (b) the Iota- be handled in accordance with appropriate federal, tion of the facility and tank,(c)the availability of equip- state, and local regulations. Product removed from the tank can usually be reused or recycled. • 'Occupational Safety and Health Administration, U.S. Department 3.2 Procedures for Disposal in Place of Labor,Washington, D.C.20602. 3,2.1 Tanks may be effectively and safely disposed in U.S. Environmental Protection Agency, 401 M Street, S.W., Washington, D.C. 20460. place by using the procedures in 3.2.2 Through 3.2.11.